Casting application has a long history. Ancient people used casting and some living utensils. In modern times, castings are used mainly as blanks for machine parts, and some precision castings can also be used directly as parts of machines. Castings in mechanical products occupy a large proportion, such as tractors, casting weight of about the total weight of the 50~70%, agricultural machinery accounted for 40~70%, machine tools, internal combustion engines, such as 70~90%. All kinds of castings, the most varieties of castings, the shape of the most complex, the dosage is also the largest, about 60% of the total production of castings.
The second is metallurgical ingot mold and engineering piping, as well as some of the tools of life. Castings also have a close relationship with everyday life.
For example, often used doors, door locks, radiators, water pipelines, iron pans, gas stove racks, irons, etc., are castings.